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1616 Filipoff (1950 EA)
Classification: Main-belt Asteroid          SPK-ID: 2001616
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0179184873849968 1.4032e-08  
a 2.914495146907893 9.7109e-09 au
q 2.862271802384389 4.5165e-08 au
i 8.473232610389916 4.3078e-07 deg
node 48.16372777402902 1.1104e-06 deg
peri 9.793616202212677 5.3232e-05 deg
M 261.6439097857178 5.5561e-05 deg
tp 2459893.026220326960
(2022-Nov-09.52622033)
0.00028123 TDB
period 1817.370321738852
4.98
9.083e-06
2.487e-08
d
yr
n .1980884114226943 9.9003e-10 deg/d
Q 2.966718491431397 9.8849e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3302  
   data-arc span      33808 days (92.56 yr)  
   first obs. used      1929-01-16  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42352  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:53:19  

Additional Information
 Earth MOID = 1.87263 au 
 Jupiter MOID = 2.08846 au 
 T_jup = 3.266 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456892.5 (2014-Aug-23.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02065425267143173 1.3111e-08  
q 2.84943583841584 4.2465e-08 au
tp 2456292.193670912007
(2012-Dec-30.69367091)
0.00025161 TDB
node 48.28862930846427 1.1096e-06 deg
peri 15.1179748990173 4.845e-05 deg
i 8.482859600959348 4.313e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3302  
   data-arc span      33808 days (92.56 yr)  
   first obs. used      1929-01-16  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42352  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:53:19  

Additional Information
 Jupiter MOID = 2.08846 au 
 T_jup = 3.266 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.71908159632815E-16 -5.445082024168975E-16 -1.891631421638851E-12 3.566269149223221E-15 -3.6873412430847E-13 9.385048498161103E-16
q -5.445082024168975E-16 1.803297269466928E-15 6.09214231804902E-12 -1.058123144669234E-14 1.193880890155323E-12 -2.987350756977263E-15
tp -1.891631421638851E-12 6.09214231804902E-12 6.330525706325836E-8 -6.379597338033569E-12 1.218607722498463E-8 -2.044159651101728E-11
node 3.566269149223221E-15 -1.058123144669234E-14 -6.379597338033569E-12 1.231257284824264E-12 -2.171398592724847E-12 1.185048814355552E-13
peri -3.6873412430847E-13 1.193880890155323E-12 1.218607722498463E-8 -2.171398592724847E-12 2.34742825984542E-9 -4.056814597805515E-12
i 9.385048498161103E-16 -2.987350756977263E-15 -2.044159651101728E-11 1.185048814355552E-13 -4.056814597805515E-12 1.860175884788097E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.30   n/a E2021B10  
diameter diameter 23.715 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.652 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Ruthroff, J.C. (2013) Minor Planet Bull. 40, 90-91.]
geometric albedo albedo 0.083   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1616 Filipoff (1950 EA)          Discovered 1950-Mar-15 by Boyer, L. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1950 EA = 1929 BB = 1957 UG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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